Until recently, the domain capital was on Exeter (Diaspora 2729), but in 1112, Archduke Adair moved it to Muan Gwi, the Vegan homeworld, to be closer to the most serious problem area of his domain -- the Solomani-dominated worlds along the rimward border of the Imperium.

The domain was originally named the Domain of Diaspora when it was created in 330.